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Totally implantable active middle-ear implants: a large, single-surgeon cohort

Published online by Cambridge University Press:  22 March 2021

E McCarty Walsh
Affiliation:
Department of Otolaryngology, University of Alabama at Birmingham, Birmingham, AL, USA
D R Morrison*
Affiliation:
Department of Otolaryngology, University of Alabama at Birmingham, Birmingham, AL, USA
W J McFeely
Affiliation:
North Alabama ENT Associates, Huntsville, USA
*
Author for correspondence: Dr Daniel Morrison, Department of Otolaryngology, University of Alabama at Birmingham, Birmingham35233, Alabama, USA E-mail: [email protected] Fax: +1 205 801 7802

Abstract

Objectives

This study aimed to evaluate hearing outcomes and device safety in a large, single-surgeon experience with the totally implantable active middle-ear implants.

Methods

This was a retrospective case series review of 116 patients with moderate-to-severe sensorineural hearing loss undergoing implantation of active middle-ear implants.

Results

Mean baseline unaided pure tone average improved from 57.6 dB before surgery to 34.1 dB post-operatively, signifying a mean gain in pure tone average of 23.5 dB (p = 0.0002). Phonetically balanced maximum word recognition score improved slightly from 70.5 per cent to 75.8 per cent (p = 0.416), and word recognition score at a hearing level of 50 dB values increased substantially from 14.4 per cent to 70.4 per cent (p < 0.0001). Both revision and explant rates were low and dropped with increasing surgeon experience over time.

Conclusion

This study showed excellent post-operative hearing results with active middle-ear implants with regard to pure tone average and word recognition score at a hearing level of 50 db. Complication rates in this case series were significantly lower with increasing experience of the surgeon. Active middle-ear implants should be considered in appropriate patients with moderate-to-severe sensorineural hearing loss who have struggled with conventional amplification and are good surgical candidates.

Type
Main Articles
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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Footnotes

Dr D Morrison takes responsibility for the integrity of the content of the paper

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